131213302021031 has 4 divisors (see below), whose sum is σ = 131835166011864. Its totient is φ = 130591438030200.

The previous prime is 131213302020947. The next prime is 131213302021091. The reversal of 131213302021031 is 130120203312131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131213302021031 - 2¹⁴ = 131213302004647 is a prime.

It is a super-2 number, since 2×131213302021031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131213302020988 and 131213302021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131213302021091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310931995100 + ... + 310931995521.

It is an arithmetic number, because the mean of its divisors is an integer number (32958791502966).

Almost surely, 2^{131213302021031} is an apocalyptic number.

131213302021031 is a deficient number, since it is larger than the sum of its proper divisors (621863990833).

131213302021031 is an equidigital number, since it uses as much as digits as its factorization.

131213302021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621863990832.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 131213302021031 its reverse (130120203312131), we get a palindrome (261333505333162).

The spelling of 131213302021031 in words is "one hundred thirty-one trillion, two hundred thirteen billion, three hundred two million, twenty-one thousand, thirty-one".